Blade Fold/Unfold and Wing Stow (BFWS) Procedures
Flight Ready to Full Stow
Engine Control Levers – Check OFF
Nr – Check 0%
Rotor Brake – OFF
Battery – Check ON
APU – RUN/Engage
HYD Pressure – Check NORMAL
AREA – CLEAR
MFD -> SYST -> BFWS – SET
FLT RDY – Verify white with *
FULL STOW – Select
ROTOR LOCK – Select on MFD, verify white with *
Observe:
NAC Positioned to 90 deg
Proprotor blades index and lock
Left and right blades fold
Flaps position to 0 deg
Nacelles lower
Wing lockpin retraction
Wing Stow
FULL STOW – Verify white with *
Full Stow to Flight Ready
Engine Control Levers – Check OFF
Nr – Check 0%
Rotor Brake – OFF
Battery – Check ON
APU – RUN/Engage
HYD Pressure – Check NORMAL
AREA – CLEAR
MFD -> SYST -> BFWS – SET
FULL STOW – Verify white with *
FLT RDY – Select
ROTOR LOCK – Select on MFD, verify white with *
Observe:
Flaps positioned to 0 deg
Wing lockpin retraction
Wing unstow
NAC raise to 90 deg
Wing lockpin extension
Blades unfold
FLT RDY – Verify white with *
ROTOR LOCK – Deselect on MFD, verify green
Flight Ready to Fold Horizontal
Engine Control Levers – Check OFF
Nr – Check 0%
Rotor Brake – OFF
Battery – Check ON
APU – RUN/Engage
HYD Pressure – Check NORMAL
AREA – CLEAR
MFD -> SYST -> BFWS – SET
FLT RDY – Verify white with *
FOLD HORIZ – Select
ROTOR LOCK – Select on MFD, verify white with *
Observe:
NAC Positioned to 90 deg
Proprotor blades index and lock
Left and right blades fold
Flaps position to 0 deg
Nacelles lower
FOLD HORIZ – Verify white with *
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